Combined bttbotb and buhpss



' Mar. 20, 1923. I 1,449,210

A. ANDRE SEN COMBINED BUFFER AND BUMPER Filed May 8, 1922 INVEN TOR.fluyz/sf fimresen A TTORNEY esrsnr AUGUST ANDPIESEN, G1 OAKLAND,CALIFURNIA.

COII BINEID BUFFER AND BUDIIPER.

Application filed May 8, 1922.

To all whom {2/ Way concern."

1i; lino n (l at i, Auc-Us'r Annnnsnn, t' nted States, residing stcombined bulier and bumper for 1 objects of my invention are, in inenpenits combined device rector ientioned, buffer to uhich adapted e2 absorboi oclzs due to blows received from any no new and then encounte dx zinccombined limiter bumper pted to iihsteud and Without injury, quite heavyand severe shocks. Another object the device be its ode :nbility toeffectively d ss pate or Word thrusts. blows, or burus received illyreorivsrdlv and encgiil us muv be encountered by l d or side-swiped bvnil Mobile or other ob ,ct,

The above ObJEClZS are accomplished by my novel connection, connectingthe butter to 1 -e bumper, and which connection consists in the bu orbeing; provided with recurved ends and joined by shackles to the ends oithe bumper, the said shackles pivotally connecting); the said parts, andin at double set of springs between said bumper and butter,

. set of said springs being; in tension and e other set in compression.

@ther features of the invention will be i ection with the ,snyinp; onesheet of drawings in l llu cit d invention, and

automobile.

an of the device by itseli" article oi manufacture.

I u face or front elevation of Figure 3 is uplsn ot' the some attachedto on automobile, and shown under one of the stresses which it ispeculiarly adapted to resist. the dotted lines representing the normalposition of the buffer member.

Figure is an enlarged plan of one end of the device in its normal.condition,

Serial No. 553,198.

H 5 is on elevution n" th, Figure t, looking in the dire-ct. arrows fromthe line In the figuresr Tne mobile es 1, may be prov r as 52, to whichmy in. or, tsched by means of clips 0 brackets 2, and adjustable thereis attached the bumocr bur 4;. curved. at its ends t eye" in Figure 42:,to receive the be i which the shackles are pivotelly c to the said eyes.These shackles are sloped section, the arms oi? the L" Fi our e being"above and below and extending); inwardly and. the bottom oi the ll theheel: a st such W 8, whereby there is presented solid for a purpose tobe presently set iortl'i. The outer ends of the shackle ore perforatedto receive the bolts 9, which extend through the eyes on the ends ot thebuner similar to those of bumper bur buffer is thus shackled to thebumoer. The butter 10 mey be made of spr g tee s is usual with suchdevice .cietwcen the buffer 10 and the bumper 4i: end conne t ing thoseports together, are a, so i i springs 11. These springs are maintainedin a state of tension, and may be joined to the buffer end bumpermembers by booking: their ends through holes in the ends of tud or boltmembers 12, as seen to greater ed vantage in Figure 4. Between thebumper and butter members 4- :ind 10, are arranged L springs 11, but arenot necessarily so, their ends may rest in TA- which serve to centerthem The compression springs 13 tend to keep the bumper buffer membersapart, end. resist lision or force having; an opposite to: Thus thesprings 11 tend to mun compression of springs 18, and springs tend tomaintain the tension of springs ii.

in the operation of my combined buffer and bumper, when a head-oncollision or similar bump may occur, it will be resisted. first, by thestiffness of buffer bar 10, and second, by the springs 13, and third, bythe springs 11 after the tension has been converted to compression, andfourth, by the stiffness of bumper bar 4:, A bump to one and v whichcomes within the spirit and scope of corner of the vehicle will tend todistort the member 10, more or less as suggested in Figure 3, and willbe resisted partly by one set of springs, and partly by the other, aswell as by the stiffness of the bufi'er and bumper members. A bump frombehind, as from the direction of the arrow P in Figure 3, will swing,that end of the bufi'er member on the shackle bolts as pivots, and willbe resisted by either or both sets of springs and by the buffer andbumper members, as clearly seen in Figure 3. The solid back at 8 of theshackle 7, prevents any projection catching and hooking into that partof my invention.

In the drawings I have shown only one specific form of my invention, andit is to be understood that the invention may be embodied in manydifferent forms, each being a species of my invention, and the patentprotection that I desire is all oi. that what I claim as new, and whichclaims are as follows:

1. In combination, a buffer and a bumper, sets of springs, one setadapted for compression and one set adapted for tension.

2. ln combination, a butter and a bumper, and between those members twosets of springs, one set held in tension, and one set held incompression.

3. In combination, a buffer and a bumper, swiveled shackles connectingthose members adjacent their ends-end between thosememhers, springs,adapted to resist distortion of said u'iembers with reference to eachother.

4. In combination, a buffer and a bumper, and between those men'iberstwo sets of eon centric coil-springs acting in opposition to each other.i

5. In combination, a buffer and bumper, and between those members twosets of concentric coil-springs acting; in opposition to each other, andmen. s for holding; said springs in position to said members.

6, i'hsa new 7. icle of m? ii 'acture, an automobile attachment,comprising a buffer member having recuryed ends terminating in eyes anda bumper member having curved ends also terminating; in eyes, andshackles adapted to pivotally engage said eyes, and sprii'ig elementsengaging the said buffer and bumper members.

AUGUST ANDRESEN.

